SEGGER Flash Loader

Introduction

As the number of devices being available is steadily growing and sometimes in an early stage of the MCU development only a few samples/boards are available that may not be provided to third parties (e.g. SEGGER) to add support for a new device. Also the existence of the device may have confidential status, so it might not be mentioned as being supported in public releases yet. Therefore it might be desirable to be able to add support for new devices on your own, without depending on SEGGER and a new release of the J-Link soft- ware package being available.

The J-Link DLL allows customers to add support for new devices on their own. It is also possible to edit/extend existing devices of the device database by for example adding new flash banks (e.g. to add support for internal EEPROM programming or SPIFI programming etc.). This chapter explains how new devices can be added to the DLL and how existing ones can be edited/extended.

General procedure

By default, the J-Link DLL comes with a build-in device database that defines which device names are known and therefore officially supported by the J-Link DLL and software that uses the J-Link DLL. This list can also be viewed on our website: https://www.segger.com/downloads/supported-devices.php It is possible to add new devices to the currently used DLL by specifying them in an XML file, named JLinkDevices.xml . It is also possible to edit/extend an device from the built-in device database via this XML file. The DLL is looking for this file in the same directory where the J-Link settings file is located. The location of the settings file depends on the IDE / software being used. For more information about where the settings file is located for various IDEs and software that use the J-Link DLL, please refer to SEGGER Wiki: https://www.segger.com/products/debug-probes/j-link/